question_answer

A 100 V carrier wave is made to vary between 160 V and 40 V by a modulating signal. What is the modulation index?                                       [JEE Main 12-Jan-2019 Morning]

A) 0.4

B) 0.5

C) 0.6

D) 0.3

Correct Answer: C

Solution :

[c] Modulation Index